Question 59220
The electricity costs of a business decreased from $12,000 one year to $10,920 the next.  What is the rate of decrease?
{{{(10920-12000)/12000}}}
{{{-1080/12000}}}
{{{-.09}}}
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If you need this in percentage, multiply this by 100%
{{{-.09(100)}}}%
-9%
The negative indicates a 9% decrease.  If you say decrease, you don't need to say it was negative.  
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Happy Calculating!!!